<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>主页</title>
    <style>
        #app {
            width: 100%;
            height: 100%;
            position: relative;
            background: white;
            transform-origin: top left;
            display: flex;
            flex-direction: column;
        }
    </style>
</head>

<body>
    <div id="app"></div>
    <!-- 已内置判断 -->
    <!-- <script src="https://polyfill.alicdn.com/polyfill.min.js"></script> -->

</body>

</html>